Identity: Add credstore

In order to support mDL on RVC, we need to
add credstore in /system/bin

Bug: 136506289
Test: atest VtsHalIdentityTargetTest
Change-Id: I7975eddde5b94edcd3a2d0e213244f84ffe43e8d
diff --git a/target/product/base_system.mk b/target/product/base_system.mk
index 7c5c809..b2d6837 100644
--- a/target/product/base_system.mk
+++ b/target/product/base_system.mk
@@ -119,6 +119,7 @@
     javax.obex \
     service-jobscheduler \
     keystore \
+    credstore \
     ld.mc \
     libaaudio \
     libamidi \